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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 64, page id 1677894601:0074
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=74
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ins che Prism, I Found ervo or chrec licele Bubbles in che
Class which retracted che Lighe irregularty. Wheretore L
corered chat pare oF the Class wich black Paper, and let-
eins che Lighe pals chrough anocher part ot ic wrhich vas
Frec trom uch Bubles, che Spectrum ot Colours became
Frectrom chole irregular Screams ot Lighe, and ras non
(uch asI. desired. Buc Rill I Found the Violer (0 dark and
Faine, chac l could scarce sec the Species oF the Lines by the
Violet, and noc ac all by che decpest pare oF ic, irtrich was
nexe che end ot che Spectrum. I Suspected cheretore chac
this Faine and dark Colour miohe be allared by thac scar-
cerins Lighe irhich as retracted, and reflected irregularty
parely by some very (mail Bubbles in che Clastes and
parely by che inequalicies of cheir Polictr: Wtrich Lighe,
tho ic was bue licele, vec ic beinq ot 2 Whice ColOuT,
miphe sustice co affect che sense (0 sronoly as eo dicturb
the Phaenomena ofthat weak and darke Colour che Violet,
and cheretore I cried, a5 in the 12th, 13th, 1ath Experi-
menes, Whecher che Liohe ot chis Colour did nor consist ot
a sensible mixture oF hecerogeneous Rays, bur found ic did
nOc. Nor did che Retractions cause any other sensible
Colour chan Violet eo emerge out of chis Lighe, 25 chey
vould hare done our ot Whice Lighe, and by con-
lequence out of this Violet Lighe had ic been sensi-
bly compounded wich Whice Lighe. Andcheretore Icon-
cluded, chat the realon why lcould noc sec the Species ot
the Lines distinctly by this Colour, was only che darknels
oF ehis Colour and Thinnels oF ies Lighe, and ies dis
cance Fromthe Axis oF the Lens; I dirided cheretore chose
Parallet Black Lines inco equal Pares, by which P miohe
readily lnom che distances ot che Colours in che spectrum
trom one another, and nored che distances OF che L enS
trom the Foci of such. Colours as cast che Species ot che
Lines